Oil burner



i. J. GRUNIN oL BURNER Oct. 28, 1930.

Filed June 28, 1928 rigid Patented Oct. 2,8, 1936 UNITED STATES ISRAEL J. GRUNIN, oF ARLINGTON, lunssnciiusiir'rsV v oTL iaunlvnnA l Application led June 28,

My present invention relates to oil burners, and particularly to oil burners of a self generating type in which a fuel oil of light specific gravity is utilized.

In many oil burners of this class in use to-day, there is considerable difficulty in obtaining proper combustion due to a large extent to a lack of proper mixture of oxygen and an uneven distribution of oxygen with the oil gas, and also, to a large extent7 the proper pre-heating of the oil before the gas is developed.

The principal object therefore, is an improved oil burner for light fuel oils;

Another object, is an improved means of air distribution over the burner proper;

Other objects and novel features concerning the construction and operation of my invention will appear as the description of the device progresses.

In the accompanying drawing illustrating the invention in somewhat diagrammatic form,

Fig. 1 is a plan view, and

Fig. 2 is a partial vertical section taken on the line 2 2 of Fig. 1.

Referring to the drawings, 10 indicates an oil supply pipe line connecting with any suitable oil reservoir which may be either a gravso ity feed type or a pressure type such as 'use compressed air or the like. Connecting with pipe line 10, is a preheating coil 11, comprising a series of turns or coils in which the oil is pre-heated while beingfed to the burner. Pipe fittings 12 together with Vshort nipples .13, completes the connection of the coil 11 to the-burner unit 141V by means of the threaded connection 15 and the tapped orifice 16 located in the hub 17.

The burner unit 14 comprises a perforated plate 18 and a base `19, and vfor present purposes are shown as one'piece, but in actual practice no doubt would be made up of several parts of the same general proportions.

The plate 18 is provided with a series of perforations of varying diameters as indicatedat 20, and each perforation is provided with an upstanding rim 21 rising slightly above the mean level of the top of the plate 18.' A corresponding rim is provided on the i928. "d serial ivo. 288,925.1*

louter circumference ofthe plate` 18 asindicated at 22. The purpose of these rims v21- is to provideJa'dilre-lilre barrierjaround the -air ports or perforations 20 such thatv a'flmi'of oil-may pass over the plate 18 and around the k55 perfora-tions 2()l without falling'throughY I to n the basef19. 'g n The fueloilflows up through theorificel located inthe 'center of the plate 18 in pre-v heated condition and circulates around the openings 20. At this stage, the oil is rapidly being transformed into a combustible gas due to heat from the plate 18, and at thesame time the gas so produced is being properly mixed 'Y with air admitted throughthe ports 20 `and f readily ignites.

The base 19, is shaped like an inverted bowl and provided with an upturned annular flange of semi-circular shape as illustrated at 23 for theJ purpose ofA providing a receptacle 5 for an annular ring of material such as asbestos indicated at 24. The purposeof the asbestos ring 24 is to provide an initial heating torch when starting the burner from a cold condition. l

Assuming that the burner is cold and about to be lighted, oil is turned on through the valve 25 in the supply line 10 and allowed to overflow the burner plate 18 through the ports 20 down on to the base 19 fromv which it runs into the receptacle 23 saturating the asbestos ring 25 which is then ignited and, the llame from this ring 25 envelops the plate 18 bringit up to a temperature sufficient to generate gas on its surface at which time combustion is completed. y g

Having thus described myinvention, what I claim as new, is: l' Y l 1. AIn an oil burner, a burner unit comprising a gas generating plate provided with-a series of air ports, said ports further provided i with annular. rims slightly above the mean level of the upper surface of said plate, an

inverted hemispherical base concentrically mounted belowrsaid plate, and provided with an -upturned annular gutter formed on the lower periphery of said base, an annular ring of non-combustible `material adapted to lit said gutter.' A' ,i f, f-

` 2.- In an oil burner, a` burner unit compris- .90

arf

ing a gas generating plate` provided with a series of air ports, said ports further provided with annular rims slightly elevated above the Vgas generating surface of said plate, an inverted hemispherieal base concentrically mounted below said plate and provided with an annular ring of non-combustible material adapted to lit a gutter formed on the lower periphery of said base, a pre-heating ooil located above said plate and providing anoil passage from a supply line to the under side of said base and having an outlet at the upper center of said gas plate generating surface.

3; In combination in an oil burner, a preheating oil supply coil connecting with a semi-spherical` base provided with an upturned gutteradjacent its lower periphery, a

perforated gas generating plate attached to v the top of said base and means provided to receive oil from said ,coil to said gas generating plate, substantially as shown and described.

In witness whereof, I hereby subscribe my name this 23rd dayof May, 1928.

lISRAEL J. GRUNIN. 

